#test
num=int(input("请输入数字"))
if(0<num<100):
     print("数字",num,"大于0")
     print()
     print()
else:
     print("数字",num,"小于0")



     num=1
     while(num<=10):
         print(num,end=' ')
         num-=1
         while True:
             print("hello")

for i in 'Hello':
        print(i,end=',')
for i in 'Hello':
    print(i,end=' ')
for i in range(1,10+1,2):
    print(i,end=',')
for i in range(1,5+1):
    for j in range(1,i+1):
        print('*',end=' ')
    print()
for i in range(1,10,2):
    print(("*"*i).center(10))
for i in range(7,0,-2):
        print(("*" * i).center(10))
for i in range(1,num+1,2):
    print(("*"*i).center(num+1))
for i in range(num-2,0,-2):
    print(("*"*i).center(num+1))